> ## Documentation Index > Fetch the complete documentation index at: https://docs.kodelabs.com/llms.txt > Use this file to discover all available pages before exploring further. # List action fields > Returns the fields an action accepts. Use the response to build the request body for invoking the action. ## OpenAPI ````yaml /openapi/kode-api.yaml get /api/v1/buildings/{buildingId}/integrations/datasources/{datasourceId}/actions/{action}/fields openapi: 3.1.0 info: title: KODE API version: 1.0.0 summary: Programmatic access to KODE OS resources and operations. description: > Use the KODE API to work with buildings, data sources, connectors, devices, points, virtual devices, timeseries data, schedules, the ontology, templating, mass writes, spaces, space assignments, tenants, meters, users, actions, and AssetOps work orders. license: name: Proprietary identifier: LicenseRef-Proprietary servers: - url: https://api.kodelabs.com/kodeos description: KODE API security: - bearerAuth: [] tags: - name: Authentication description: OAuth 2.0 discovery, token, and revocation endpoints. - name: Buildings description: Buildings and their areas. - name: Data sources description: Data sources connected to a building. - name: Devices description: Devices and their points. - name: Points description: Point queries and point writes. - name: Timeseries description: Current and historical point values. - name: Actions description: Actions exposed by building data sources. - name: Work orders description: AssetOps work orders, lookups, comments, and attachments. - name: Connectors description: KODE API connectors and the devices and points ingested through them. - name: Schedules description: Schedules discovered on building data sources. - name: Templating description: Apply ontology templates to groups of points. - name: Virtual devices description: Virtual devices that group points from other devices. - name: Ontology description: Canonical types, fields, units, and connections of the KODE ontology. - name: Users description: Users of the organization and their app access. - name: Mass write description: Write values to many points across buildings, and follow each run. - name: Spaces description: Levels and space units of a building, and the meters located in them. - name: Space assignments description: Assign tenants to leasable spaces of a building for a period. - name: Tenants description: Tenants of a building, the people or companies that lease its spaces. - name: Meters description: >- Meters of a building, their space assignments, parent and child links, and readings. paths: /api/v1/buildings/{buildingId}/integrations/datasources/{datasourceId}/actions/{action}/fields: get: tags: - Actions summary: List action fields description: >- Returns the fields an action accepts. Use the response to build the request body for invoking the action. operationId: listActionFields parameters: - $ref: '#/components/parameters/BuildingId' - $ref: '#/components/parameters/DatasourceId' - $ref: '#/components/parameters/Action' responses: '200': description: Fields for the action. content: application/json: schema: type: array items: $ref: '#/components/schemas/FieldDefinition' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' '429': $ref: '#/components/responses/TooManyRequests' components: parameters: BuildingId: name: buildingId in: path required: true description: Building identifier from List buildings. schema: type: string example: 67c960faffaa42223163099e DatasourceId: name: datasourceId in: path required: true description: Data source identifier from List building data sources. schema: type: string example: 67c97396a0fceb379fc4ec08 Action: name: action in: path required: true description: Action name from List data source actions. schema: type: string example: DISCOVER schemas: FieldDefinition: type: object description: Describes one field you can send in an `actions` array. properties: identifier: type: string description: Value to send as `actions[].id`. example: priority name: type: string example: priority displayName: type: string example: Priority dataType: type: string example: STRING inputType: type: string example: DROP_DOWN defaultValue: type: string example: override order: type: integer example: 1 options: type: array description: Allowed values. Send the option `_id`. items: type: object properties: _id: type: string example: override name: type: string example: Override metadata: type: object properties: required: type: string enum: - MANDATORY - OPTIONAL - CONDITIONAL example: MANDATORY isDisabled: type: boolean isHidden: type: boolean filter: type: object description: Condition that makes a `CONDITIONAL` field apply. properties: conjunction: type: string example: AND filterSet: type: array items: type: object properties: fieldName: type: string example: priority operator: type: string example: IN value: type: array items: type: string example: - override - set responses: Unauthorized: description: The access token is missing, invalid, or expired. Request a new token. Forbidden: description: The service account lacks permission for this building or operation. NotFound: description: The resource does not exist or is not assigned to the service account. TooManyRequests: description: >- A rate-limit window is exhausted. Wait, then retry with increasing delays. securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT description: > Paste an access token from [Create an access token](/products/kode-api/api-reference/authentication/create-an-access-token). Tokens expire, so request a new one if you receive `401`. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.